Develop Reference

Detecting the end of a overflow-x:scroll element and add a class before animation

As the title suggests I want to detect the start and end of a scrollable element built using overflow.
The following code works:
var scrollAmount = 150;
var scrollBox = $('.js-compare_scroll');
var arrowLeft = $('.js-compare_scroll_left');
var arrowRight = $('.js-compare_scroll_right');
var inactive = 'm-inactive';
$(arrowLeft).on('click', function () {
$(this).parent().find(scrollBox).stop().animate({
scrollLeft: '-='+scrollAmount
}, function() {
arrowRight.removeClass(inactive);
if(scrollBox.scrollLeft() === 0) {
arrowLeft.addClass(inactive);
}
});
});
$(arrowRight).on('click', function () {
$(this).parent().find(scrollBox).stop().animate({
scrollLeft: '+='+scrollAmount
}, function() {
arrowLeft.removeClass(inactive);
if(scrollBox.scrollLeft() + scrollBox.innerWidth() >= scrollBox[0].scrollWidth) {
arrowRight.addClass(inactive);
}
});
});
However the class to style the inactive colour of the arrows only appears once the animation completes. I need to add the class before the animation completes because it has a delay. I believe by default it is 400.
Is there anyway to detect this and apply the arrow classes where needed?
Thanks.

Came back from a break and realised I should take the checking if its at the end off the click event and onto a scroll event. This works a lot better now.

Using a jquery slider for text instead of images?

This may be a little too specific, but I have a jquery slider that I am using <p> classes instead of images to cycle through customer quotes. Basically the problem I am running into right now is when it is static and non moving (JS code is commeneted out) they are aligned how I want them to be. As soon as the JS is un commented, they stretch out of view and you just see a white box?
Any ideas?
How I want each panel to look like:
jsfiddle

So I sort of made this my Friday project. I've changed a whole lot of your code, and added a vertical-align to the quotes and authors.
Here's the fiddle http://jsfiddle.net/qLca2fz4/49/
I added a whole lot of variables to the top of the script so you could less typing throughout.
$(document).ready(function () {
//rotation speed and timer
var speed = 5000;
var run = setInterval(rotate, speed);
var slides = $('.slide');
var container = $('#slides ul');
var elm = container.find(':first-child').prop("tagName");
var item_width = container.width();
var previous = 'prev'; //id of previous button
var next = 'next'; //id of next button
Since you used a % based width I'm setting the pixel widths of the elements in case the screen is reszed
slides.width(item_width); //set the slides to the correct pixel width
container.parent().width(item_width);
container.width(slides.length * item_width); //set the slides container to the correct total width
As you had, I'm rearranging the slides in the event the back button is pressed
container.find(elm + ':first').before(container.find(elm + ':last'));
resetSlides();
I combined the prev and next click events into a single function. It checks for the ID of the element targeted in the click event, then runs the proper previous or next functions. If you reset the setInterval after the click event your browser has trouble stopping it on hover.
//if user clicked on prev button
$('#buttons a').click(function (e) {
//slide the item
if (container.is(':animated')) {
return false;
}
if (e.target.id == previous) {
container.stop().animate({
'left': 0
}, 1500, function () {
container.find(elm + ':first').before(container.find(elm + ':last'));
resetSlides();
});
}
if (e.target.id == next) {
container.stop().animate({
'left': item_width * -2
}, 1500, function () {
container.find(elm + ':last').after(container.find(elm + ':first'));
resetSlides();
});
}
//cancel the link behavior
return false;
});
I've found mouseenter and mouseleave to be a little more reliable than hover.
//if mouse hover, pause the auto rotation, otherwise rotate it
container.parent().mouseenter(function () {
clearInterval(run);
}).mouseleave(function () {
run = setInterval(rotate, speed);
});
I broke this in to its own function because it gets called in a number of different places.
function resetSlides() {
//and adjust the container so current is in the frame
container.css({
'left': -1 * item_width
});
}
});
//a simple function to click next link
//a timer will call this function, and the rotation will begin :)
And here's your rotation timer.
function rotate() {
$('#next').click();
}

It took me a little bit, but I think I figured out a few things.
http://jsfiddle.net/qLca2fz4/28/
First off, your console was throwing a few errors: first, that rotate wasn't defined and that an arrow gif didn't exist. Arrow gif was probably something you have stored locally, but I changed the 'rotate' error by changing the strings in the code here to your actual variables.
So, from:
run = setInterval('rotate()', speed);
We get:
run = setInterval(rotate, speed);
(No () based on the examples here: http://www.w3schools.com/jsref/met_win_setinterval.asp)
But I think a more important question is why your text wasn't showing up at all. It's because of the logic found here:
$('#slides ul').css({'left' : left_value});
You even say that this is setting the default placement for the code. But it isn't..."left_vaule" is the amount that you've calculated to push left during a slide. So if you inspect the element, you can see how the whole UL is basically shifted one slide's worth too far left, unable to be seen. So we get rid of 'left_value', and replace it with 0.
$('#slides ul').css({'left' : 0});
Now, there's nothing really handling how the pictures slide in, so that part's still rough, but this should be enough to start on.
Let me know if I misunderstood anything, or if you have any questions.

So, a few things:
1) I believe you are trying to get all of the lis to be side-by-side, not arranged up and down. There are a few ways to do this. I'd just make the ul have a width of 300%, and then make the lis each take up a third of that:
#slides ul {
....
width: 300%;
}
#slides li {
width: calc(100% / 3);
height:250px;
float:left;
}
2) You got this right, but JSFiddle automatically wraps all your JS inside a $(document).ready() handler, and your function, rotate needs to be outside, in the normal DOM. Just change that JSFiddle setting from 'onload' to 'no wrap - in head'
3) Grabbing the CSS value of an element doesn't always work, especially when you're dealing with animating elements. You already know the width of the li elements with your item_width variable. I'd just use that and change your code:
var left_indent = parseInt($('#slides ul').css('left')) - item_width;
$('#slides ul').animate({'left' : left_indent}, 1500, function () {
to:
$('#slides ul').stop().animate({'left' : -item_width * 2}, 1500, function () {
4) Throw in the .stop() as seen in the above line. This prevents your animations from overlapping. An alternative, and perhaps cleaner way to do this, would be to simply return false at the beginning of your 'next' and 'prev' functions if #slides ul is being animated, like so:
if ($('#slides ul').is(':animated')) return false;
And I think that's everything. Here's the JSFiddle. Cheers!
EDIT:
Oh, and you may also want to clearInterval at the beginning of the next and prev functions and then reset it in the animation callback functions:
$('#prev').click(function() {
if ($('#slides ul').is(':animated')) return false;
clearInterval(run);
$('#slides ul').stop().animate({'left' : 0}, 1500,function(){
....
run = setInterval('rotate()', speed);
});
});

remove one class when animating

I try to animate menu-panel. It should slide to the left. But it doesn't work right. And I can't understand why.

There are a few issues with the current code (e.g. you were missing a . on one panel selector and not referencing panel1 after changing the panel class. I also switched to absolute positioning with the arrow inside the panel.
I did a little cleanup to make the changes obvious (you should not repeat jQuery selectors - use temp vars instead):
JSFiddle: http://jsfiddle.net/TrueBlueAussie/2x3uT/8/
$(function () {
$('.slider-arrow').click(function () {
var $this = $(this);
var $panel = $(".panel, .panel1");
var left = -53;
var text = '»';
if ($this.hasClass('hide')) {
text = '«';
left = 0;
}
$panel.animate({
left: left
}, 700, function () {
// Animation complete.
$this.html(text).toggleClass('hide').toggleClass('show');
$panel.toggleClass('panel').toggleClass('panel1');
});
});
});
You can tweak the position numbers to make it match what you wanted.

jQuery animate within animate callback works only once

I have two pagination links which trigger a jQuery animation.
A callback function on the animation triggers a second animation.
This works fine, however, it only works the first time the function is called.
Each time after, the first of the 2 animations works and the second one does not, it merely changes the CSS without the effect.
I'm racking my brain here, to no effect (pun intended).
function switchItem(e) {
e.preventDefault();
// If not current piece
if($(this).hasClass('light')) {
/* VARIABLES */
var container = $('.portfolio footer .portfolio_content');
var link = $(this).attr('id');
var newItem = $(this).html();
/*===================================================
* This is the Key part here
===================================================*/
/* FIRST ANIMATION */
container.animate({
'right':'-100%'
}, 300, 'swing',
// Callback Function
function() {
$(this).html('').css({'left':'-100%'});
$.get('inc/portfolio/'+link+'.php', function(data) {
container.html(data);
/* SECOND ANIMATION */
container.animate({
'left':'0%'
}, 300, 'swing');
});
});
}
}
Here is the demonstration: http://eoghanoloughlin.com/my_site/#portfolio

See working sample here, your left is conflicting with your first right -100% animation and at the end if you don't reset the right then it will conflict with your second left animation
http://jsfiddle.net/PAdr3/2/
reset left before animating
container.css('left', 'auto');
and reset right when complete
container.animate({
'left':'0%'
}, 300, 'swing', function() {
$(this).css('right', 'auto');
});

When you replace the html in a page with new content, it will not automatically add listeners or other jquery enhancements that are added via javascript.
I suspect you need to apply these again after you put the content you fetched with $.get into the page.
Another alternative, is to add all the content in one load, but make the second page hidden. This is probably a nicer alternative than using $.get

I think that the animate function does not string until the first animate is ready. The docs say:
If supplied, the complete callback function is fired once the
animation is complete. This can be useful for stringing different
animations together in sequence.
Something like this might work:
function switchItem(e) {
e.preventDefault();
// If not current piece
if($(this).hasClass('light')) {
/* VARIABLES */
var container = $('.portfolio footer .portfolio_content');
var link = $(this).attr('id');
var newItem = $(this).html();
/*===================================================
* This is the Key part here
===================================================*/
/* FIRST ANIMATION */
container.animate({
'right':'-100%'
}, 300, 'swing',
// Callback Function
function() {
$(this).html('').css({'left':'-100%'});
$.get('inc/portfolio/'+link+'.php', function(data) {
container.html(data);
});
}).complete(
/* SECOND ANIMATION */
container.animate({
'left':'0%'
}, 300, 'swing');
);
}
}

Implementing a Parameter to a plugin - Shows 'X' number of elements

The current plugin, shown below, scrolls the top-most div in a series of divs with the same class upwards, then removes it from the container, and appends it to the bottom of the series (within the container). This gives the illusion of a vertical slideshow.
$.fn.rotateEach = function ( opts ) {
var $this = this,
defaults = {
delay: 5000
},
settings = $.extend(defaults, opts),
rotator = function ($elems) {
$elems.eq(0).slideUp(500, function(){
var $eq0 = $elems.eq(0).detach();
$elems.parent().append($eq0);
$eq0.fadeIn();
setTimeout(function(){ rotator( $($elems.selector) ); },
settings.delay);
});
};
setTimeout(function(){ rotator( $this ); }, settings.delay);
};
$('.dynPanelContent').rotateEach();
However, if there are a large number of elements to scroll through, this would make for a VERY long page. As such, I am attempting to re-write this script so that it accepts a parameter which will determine how many elements to display. Any elements exceeding this number will be hidden until they are in the top 'x' number of elements. Here is an example of what I have attempted to implement.
$.fn.rotateEach = function (opts) {
var $this = this,
defaults = {
delay: 5000,
//Add a parameter named elementsShown, pass in a default value of 3
elementsShown: 3
},
settings = $.extend(defaults, opts),
rotator = function ($elems) {
//Hide the elements that are past the number to be shown
for (i = settings.elementsShown; i <= $elems.eq; i++) {
$elems.eq(i).hide();
}
$elems.eq(0).slideUp(500, function () {
var $eq0 = $elems.eq(0).detach();
var $eqN = $elems.eq(settings.elementsShown) - 1;
//Check & Show the element that is now within the show range
if ($elems.eq() == $eqN) {
$elems.eq($eqN).show('slow');
}
$elems.parent().append($eq0);
$eq0.fadeIn();
setTimeout(function () { rotator($($elems.selector)); },
settings.delay);
});
};

You can use simple CSS for this, mate.
If your elements are all of the same height (which your problem has to assume: if you are rotating a whole bunch of things dynamically, you won't want your page to change height), then you don't really need to use JavaScript for this at all. Just set the height of the container to what you want and hide the overflow. Then when you remove and append, everything appears to work. This won't take care of your dynamic configuration, though.

Improved plug-in: http://jsfiddle.net/morrison/tTJaM/
Notes:
Added support for showing X elements.
Added support for rotating only certain elements.
Added support for stopping the rotations:
Stop after X milliseconds.
Stop after X rotations.
overflow-y:hidden is added to container dynamically.
Simplified your detaching/attaching.
Known Issues:
Displaying X elements doesn't check for a maximum.